Attachment for cutter grinders



Juez?, 1939. RME BLQND 2,164,212

ATTACHMENT FOR CUTTER GRINDERS Filed April 2l, 1958 3 Sheets-Sheet l 2s 2725 2,6 T 'l' o HINT:Y6 3 s llfl 1 Im! -1 2 V' 111:11 N lummmH WITNESS.' INVENTOR.

ZMW. BY RICHARD K.LeB|.oND

ATTORNEY.

June 27, 1939. R. K. LE BLOND 2,154,212

` I ATTACHMENT FOR QUTTER GRINDERS Filed April 21, 195s s sheets-sheet 2 WITNESS.

. v RlCHARD K. LEBLOND ATTORNEY.

June 27, 1939. R. K. LE BLOND ATTACHMENT FOR CUTTER GRINDERS Filed April 21. 1938 3 Sheets-Sheet 3 i l I INVENTOR.

WTNWESS. g MMM Z', RICHARD K. Lzamorm` ATTORNEY.

ber s, 1937.

Patented June 27, 1939 UNITED STATES PATENT OFFICE ATTACHMENT FOR CUTTER GRINDERS aware Application April 21, 1938, Serial No. 203,368

6 Claims.

This invention pertains to an attachment for cutter grinders of a character shown in Patent 932,791 dated August 31, 1909, and in copending application Serial Number 173,438 iiled Novem- More particularly this invention pertains to an arrangement for universally mounting the grinding wheel spindle on the supporting stump of the cutter grinder. v

One object of the invention is to mount the grinding wheel spindle so that its axis may be positioned in any plane relative to the Work table of the machine. i

Another object isto mount the grinding wheel spindle on the stump of the cutter grinder so that it may be reciprocated horizontally relative to the work table of the machine.

And a still further object is to provide manual means which may be operated from each side of the machine for reciprocating the grinding wheel.

Further objects and advantages of this invention will appear from the following description of the drawings in which:

Figure I is a perspective view or a cutter grinder showing the attachmentJ applied thereto.

Figure II is a vertical section through the attachment on the line II--D of Figures III and IV.

Figure III is a rear elevation of the attachment.

Figure IV is a front elevation of the attachment.

Noting particularly Figure I, the machine comprises a base I upon which is fixed the stump 2 in a manner shown in the patent and application set forth above. Surrounding and swiveling on the stump 2 is the column 3. Vertically slidable on the column 3 on dovetail guideways 4 and 5 is the knee 8 on top of which is horizontally slidable the saddle 1 in a direction radially of the axis of swiveling of the column 3. On the saddle is mounted the sliding table 8 which is reciprocatable in a direction perpendicular to the direction of movement of the saddle 1 on the knee 5. A swivel table 9 is mounted on top of the sliding table 8 upon which may be placed the various workxholding fixtures. 1

The novel grinding attachment comprises a .support I0 which is xed on the top 'of the stump 2 and has upwardly projecting portions II and I2 carrying ball bearings I3 and I4, respectively. Mounted inthe bearings I3 and I4 against axial movement is the driving spindle I5 upon which is xed the pulley I5 between said bearings which is driven by a belt I'I connected to a source of power, such as an electric motor, mounted in the base I of the machine.

Also carried on the base I0 is the reciprocatable housing IB slidably mounted on the horizontal dove-tail guideways I9 for movement radially of the axis of swiveling of the column 3. Suitable I T-slot bolts I9a are provided for `tightly binding the housing I8 to the support I0 when no movement of the housing I8 is desired. In order to provide means for reciprocating the housing I8, an actuating rock shaft 28 is rotatably mounted in its upper part thereof and has fixed on it a pinion 2| which engages a rack 22 fixed to the lo upper surfaces 23 of the portions II and I2 of the support I0 so that by rotating the rock shaft 20, the pinion 2l will roll along the rack 22 thus moving the housing I8 on the guideways I9. In order to facilitate the rotating of the rock shaft 15 29, a clutch crank handle 24 is provided which may be placed on either of the projecting ends 25 or 26 of the shaft 20 and engaged with the respective clutches 21 and 28 xed to the rock shaft 2U.

' On one end of the housing I8 is provided a projecting bearing 29 upon which is journaled the swiveling bracket 3U, the bracket being clamped in selected positions against the face 3| of the housing I8 -by suitable'bolts 32 operating in an appropriate circular T-slot 33 formed in the end of the housing.

In a bore 34 formed in the bracket 30 at right angles to the axis of the bearing 29 is fitted a bushing .35 which is held inplace therein by a suitable pin 36 in the bracket. The bushing 35 y,projects outwardly and has a bearing surface 31 upon which is mounted the swiveling wheel head 38 which may be clamped in selected positions against the face 39 of the bracket 30 by suitable bolts 40 operating in an appropriate circular T-slot 4I in the bracket.

The grinding wheel spindle 42, having a. suitable grinding wheel 43 mounted thereon, is journaled` in the ball bearings 44 and 45 against axial movement in the wheel head 38. The wheel spindle 42 is driven from the driving spindle I5 by the shaft 46 which is journaled against axial movement in the ball bearings 41 and 48 carried in housing I8. This shaft 46 has a splined piston 49 which is free to'slide in the splined portion 50 in the bore 5I in the spindle I5 so that the shaft 46 may at all times be rotated even while the housing I8 is-being reciprocated. I On the other end ofthe shaft 48 is fixed a bevel 50 gear 52 which drives the bevel gear 53 fixed on the intermediate shaft 54 journaled on the ball bearings x55 and 56 carried in the bushing'35.

A second bevel gear 51 formed integral with the intermediate shaft 54 drives the bevel gear Il on the wheel spindle I2.` The axis of the shaft spindle universally mounted on said housing, a grinding wheel on said spindle, a splined shaft 46 coincides with the axis of swiveling of the bracket I and the axis of the intermediate shaft 54v coincides with thel axis of swiveling of the wheel head 38 so that the wheel spindle 42 may be at ail times driven in any selected position in which it might be set. It will thus be seen that the axis of the grinding wheel spindle I2 may be positioned in any plane relative to the wor table Qrof the machine. Having fully set forth and`described my in- -vention, what I claim and desire to secure by United States ,Letters Patent is:

I1. A grinding wheel mounting for cutter grinder comprising a base tlxed onthe stump of said grinder, a driving spindle journaled in said base, means for driving said spindle, a housing reciprocatably mounted on said base, a grinding wheel spindle mounted on said housing, a grinding wheel on said spindle. a splined shaft slidably engaging in a mating splined bore in said driving spindle and journaled in said housing, and means interconnecting said shaft with said grinding wheel spindle whereby said grinding wheel may be rotated and reciprocated simultaneously.

'2. A grinding wheel mounting for cutter grinder comprising a base xed on the stump of said grinder, a driving spindle journaled in said base, means for driving said spindle, a housing reciprocatably mounted onsaid base, a grinding wheel slidably engaging in a' mating splinedv bore in said'driving spindle and journaled in said housing, and bevel gear transmission mechanism interconnecting said shaft with said grinding wheel spindle.

3. A 'grinding wheel mounting for cutter grinder comprising a base iixed on the stump of said grinder, means for driving said spindle, ahousing reciprocatably mounted on said base, a grinding `wheel 'spindle mounted on said housing, a grinding wheel on said spindle, a splined shaft slidably engaging in a mating splined bore in said driving spindle and journaled in said housing, means interconnecting said shaft with said grinding wheel spindle, and manual means for reciprocating said housing during rotation of said grinding wheel.

4. A grinding wheel mounting for cutter grinder comprising a base fixed on the stump of said grinder, means for driving said spindle, a housing reciprocatably mounted on said base, a grinding wheel spindle mounted on said housing, ia grinding wheel on said spindle, a splined shaft `slidahly engaging in a mating splined bore in said driving spindle and journaled in said housing, means interconnecting said shaft with said grinding wheel spindle,A means for reciprocating said housing comprising a' rack fixed on said base, a rock shaft journaled in said housing, a pinion on said rock shaft engaging said rack,

-and lever operating means for actuating said vperpendicular to. said first mentioned plane, a

grinding wheel spindle mounted in said wheel head, a grinding wheel on said spindle, a splined shaft journaled in said housing and slidably engaging in a mating splined bore in said driving spindle, means interconnecting. said shaft with said grinding wheel spindle, means for reciprocating said housing, and means for driving said driving spindle for rotating said grinding wheel.

6. A grinding wheel mounting for cutter grinder comprising a base fixed on the stump of said grinder, means for driving said spindle, a housing reciprocatably mounted on said base, a grinding wheel spindle mounted on said housing, a grinding wheel on said spindle, a splined shaft slidably engaging in a mating splined bore in said driving spindle and journaled in said hous-v ing, means interconnecting said shaft with said grinding wheel spindle, means for reciprocating 

